[JohnAudioTech] observed there was no bass on the TV at his mother and father’ home. That led to the invention of a blown fuse and a corresponding restore. When he opened it up, he may odor that one thing had gone on within the amplifier. You may observe the restore within the video under.
His first idea was that some glue grew to become conductive and shorted the facility rails. We had been skeptical, to be trustworthy. When he fed energy to it via a present limiter, he may hear a scorching noise and even see slightly glowing from the recent element.
Disassembly ensued. Eradicating the suspect elements confirmed some critically burned elements and a few charring underneath a switching transistor. The capacitors seemed a lot worse for put on, and the PCB wanted some wires to jumper burned conductors.
On the finish, there was thumping, so it appears the surgical procedure was a hit. Nonetheless, testing blew a fuse once more, which made us nervous. Nonetheless, appears to work when you don’t drive it too arduous.
We all the time get pleasure from watching a teardown, and if there’s a restore too, that’s even higher.
